alexjs 4.0.1 (new formula)

This catches insensitive, inconsiderate writing. It’s available through
NPM but we package other things that are and this is sufficiently
useful to non-Javascript folks that it makes sense to add.

Closes #11606.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/alexjs.rb

@@ -0,0 +1,20 @@
+require "language/node"
+
+class Alexjs < Formula
+  desc "Catch insensitive, inconsiderate writing"
+  homepage "http://alexjs.com"
+  url "https://github.com/wooorm/alex/archive/4.0.1.tar.gz"
+  sha256 "85786f7e5a89b2ee77c54a57275723046309933639f96ab3174e9366c7c37675"
+
+  depends_on "node"
+
+  def install
+    system "npm", "install", *Language::Node.std_npm_install_args(libexec)
+    bin.install_symlink Dir["#{libexec}/bin/*"]
+  end
+
+  test do
+    (testpath/"test.txt").write "garbageman"
+    assert_match "garbage collector", shell_output("#{bin}/alex test.txt 2>&1", 1)
+  end
+end